import axios, { AxiosResponse, InternalAxiosRequestConfig } from 'axios'
import { useUserStore } from '@/store/modules/user'
import { getToken } from '@/utils/auth'
import { tansParams, blobValidate } from '@/utils/ruoyi'
import cache from '@/plugins/cache'
import { HttpStatus } from '@/enums/RespEnum'
import { errorCode } from '@/utils/errorCode'
import { LoadingInstance } from 'element-plus/es/components/loading/src/loading'
import FileSaver from 'file-saver'
import { getLanguage } from '@/lang'
import { ElLoading, ElMessage, ElMessageBox, ElNotification } from 'element-plus'
import { generateUUID } from '.'

let downloadLoadingInstance: LoadingInstance
// 是否显示重新登录
export const isRelogin = { show: false }

// 创建 axios 实例
const service = axios.create({
  baseURL: import.meta.env.VITE_APP_BASE_API,
  timeout: 50000,
  headers: {
    'Content-Type': 'application/json;charset=utf-8',
  },
})

// 请求拦截器
service.interceptors.request.use(
  (config: InternalAxiosRequestConfig) => {
    // 对应国际化资源文件后缀
    config.headers['Content-Language'] = getLanguage()
    const unit = config.data
    const isToken = (config.headers || {}).isToken === false
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
    if (getToken() && !isToken) {
      // config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
      config.headers['token'] = getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
    }
    if (unit?.unit) {
      config.headers['Content-Type'] = 'application/x-www-form-urlencoded'
    }
    if (!unit?.unit) {
      // get请求映射params参数
      if (config.method === 'get' && config.params) {
        let url = config.url + '?' + tansParams(config.params)
        url = url.slice(0, -1)
        config.params = {}
        config.url = url
      }


      const requestId = generateUUID()
      if (config.data && config.data.constructor == Object) {
        const { pageNum, pageSize, ...data } = config.data || {}
        const pageObj: any = {}
        if (pageNum) pageObj.pageNum = pageNum
        if (pageSize) pageObj.pageSize = pageSize
        config.data = {
          ...pageObj,
          requestId: requestId,
          data: data == null ? {} : data.coverData ? data.coverData : data,
        }
        if (config.data.data.file) config.data.file = config.data.data.file
        if (config.data.data.avatarfile) config.data.avatarfile = config.data.data.avatarfile
      } else {
        config.data = {
          requestId: requestId,
          data: typeof config.data == 'undefined' ? {} : config.data,
        }
      }

      if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
        const requestObj = {
          url: config.url,
          data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
          time: new Date().getTime(),
        }
        const sessionObj = cache.session.getJSON('sessionObj')
        if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
          cache.session.setJSON('sessionObj', requestObj)
        } else {
          const s_url = sessionObj.url // 请求地址
          const s_data = sessionObj.data // 请求数据
          const s_time = sessionObj.time // 请求时间
          const interval = 500 // 间隔时间(ms)，小于此时间视为重复提交
          if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
            const message = '数据正在处理，请勿重复提交'
            console.warn(`[${s_url}]: ` + message)
            return Promise.reject(new Error(message))
          } else {
            cache.session.setJSON('sessionObj', requestObj)
          }
        }
      }
      // FormData数据去请求头Content-Type
      if (config.data instanceof FormData) {
        delete config.headers['Content-Type']
      }
    }

    return config
  },
  (error: any) => {
    console.log(error)
    return Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(
  (res: AxiosResponse) => {
    // 未设置状态码则默认成功状态
    const code = res.data.code === 0 || res.data.code ? res.data.code : HttpStatus.SUCCESS
    // 获取错误信息
    const msg = errorCode[code] || res.data.message || errorCode['default']
    // 二进制数据则直接返回
    if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
      return res.data
    }
    if (code === 401) {
      // prettier-ignore
      if (!isRelogin.show) {
        isRelogin.show = true
        ElMessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          isRelogin.show = false
          useUserStore().logout().then(() => {
            location.href = import.meta.env.VITE_APP_CONTEXT_PATH
          })
        }).catch(() => {
          isRelogin.show = false
        })
      }
      return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
    } else if (code === HttpStatus.SERVER_ERROR) {
      ElMessage({ message: msg, type: 'error' })
      return Promise.reject(new Error(msg))
    } else if (code === HttpStatus.WARN) {
      ElMessage({ message: msg, type: 'warning' })
      return Promise.reject(new Error(msg))
    } else if (code > 10000) {
      ElMessage({ message: msg, type: 'warning' })
      return Promise.reject(new Error(msg))
    } else if (code !== HttpStatus.SUCCESS) {
      ElNotification.error({ title: msg })
      return Promise.reject('error')
    } else {
      return Promise.resolve(res.data)
    }
  },
  (error: any) => {
    let { message } = error
    if (error.response.status == 401) {
      if (!isRelogin.show) {
        isRelogin.show = true
        ElMessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning',
        })
          .then(() => {
            isRelogin.show = false
            useUserStore()
              .logout()
              .then(() => {
                location.href = import.meta.env.VITE_APP_CONTEXT_PATH
              })
          })
          .catch(() => {
            isRelogin.show = false
          })
      }
      return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
    }

    if (message == 'Network Error') {
      message = '后端接口连接异常'
    } else if (message.includes('timeout')) {
      message = '系统接口请求超时'
    } else if (error.response.status == 500 && error.response.data) {
      message = error.response.data.message
    } else if (error.response.status == 403) {
      message = '没有权限'
    } else if (message.includes('Request failed with status code')) {
      message = '系统接口' + message.substr(message.length - 3) + '异常'
    }
    ElMessage({ message, type: 'error', duration: 5 * 1000 })
    return Promise.reject(error)
  }
)
// 通用下载方法
export function download(url: string, params: any, fileName: string) {
  downloadLoadingInstance = ElLoading.service({ text: '正在下载数据，请稍候', background: 'rgba(0, 0, 0, 0.7)' })
  // prettier-ignore
  return service.post(url, params, {
    transformRequest: [
      (params: any) => {
        return tansParams(params)
      }
    ],
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    responseType: 'blob'
  }).then(async (resp: any) => {
    const isLogin = blobValidate(resp)
    if (isLogin) {
      const blob = new Blob([resp])
      FileSaver.saveAs(blob, fileName)
    } else {
      const resText = await resp.data.text()
      const rspObj = JSON.parse(resText)
      const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
      ElMessage.error(errMsg)
    }
    downloadLoadingInstance.close()
  }).catch((r: any) => {
    console.error(r)
    ElMessage.error('下载文件出现错误，请联系管理员！')
    downloadLoadingInstance.close()
  })
}
// 导出 axios 实例
export default service
